Generics are used to extend the type or methods to work for objects and specify the data type of many, together.
⭐ Single generic method declaration that can be called with arguments of different types. Based on the arguments passed the method call is done.
Rules for defining generic methods:
type parameter section delimited by angle brackets (< and >)
one or more type parameters separated by commas. A type parameter, also known as a type variable, is an identifier that specifies a generic type name.
type parameters can be used to declare the return type
type parameter can represent only reference types, not primitive types (like int, double and char).
Same but followed by by a type parameter section. These classes are known as parameterized classes or parameterized types because they accept one or more parameters.
⭐ NOTE: The point class should use toString else instead of giving thye output as (x,y), it will give the memory location.
Sometimes we would like to limit the datatype and this used. To declare a bounded type parameter, list the type parameter's name, followed by the extends keyword, followed by its upper bound. Eg. public static <T extends Comparable> T maximum(T x, T y, T z)
